| /* |
| * Copyright (c) 2017, Alliance for Open Media. All rights reserved. |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #ifndef AOM_AV1_COMMON_OBMC_H_ |
| #define AOM_AV1_COMMON_OBMC_H_ |
| |
| typedef void (*overlappable_nb_visitor_t)(MACROBLOCKD *xd, int rel_mi_row, |
| int rel_mi_col, uint8_t op_mi_size, |
| int dir, MB_MODE_INFO *nb_mi, |
| void *fun_ctxt, const int num_planes); |
| |
| static INLINE void foreach_overlappable_nb_above(const AV1_COMMON *cm, |
| MACROBLOCKD *xd, int nb_max, |
| overlappable_nb_visitor_t fun, |
| void *fun_ctxt) { |
| if (!xd->up_available) return; |
| |
| const int num_planes = av1_num_planes(cm); |
| int nb_count = 0; |
| const int mi_col = xd->mi_col; |
| // prev_row_mi points into the mi array, starting at the beginning of the |
| // previous row. |
| MB_MODE_INFO **prev_row_mi = xd->mi - mi_col - 1 * xd->mi_stride; |
| const int end_col = AOMMIN(mi_col + xd->width, cm->mi_params.mi_cols); |
| uint8_t mi_step; |
| for (int above_mi_col = mi_col; above_mi_col < end_col && nb_count < nb_max; |
| above_mi_col += mi_step) { |
| MB_MODE_INFO **above_mi = prev_row_mi + above_mi_col; |
| mi_step = |
| AOMMIN(mi_size_wide[above_mi[0]->bsize], mi_size_wide[BLOCK_64X64]); |
| // If we're considering a block with width 4, it should be treated as |
| // half of a pair of blocks with chroma information in the second. Move |
| // above_mi_col back to the start of the pair if needed, set above_mbmi |
| // to point at the block with chroma information, and set mi_step to 2 to |
| // step over the entire pair at the end of the iteration. |
| if (mi_step == 1) { |
| above_mi_col &= ~1; |
| above_mi = prev_row_mi + above_mi_col + 1; |
| mi_step = 2; |
| } |
| if (is_neighbor_overlappable(*above_mi)) { |
| ++nb_count; |
| fun(xd, 0, above_mi_col - mi_col, AOMMIN(xd->width, mi_step), 0, |
| *above_mi, fun_ctxt, num_planes); |
| } |
| } |
| } |
| |
| static INLINE void foreach_overlappable_nb_left(const AV1_COMMON *cm, |
| MACROBLOCKD *xd, int nb_max, |
| overlappable_nb_visitor_t fun, |
| void *fun_ctxt) { |
| if (!xd->left_available) return; |
| |
| const int num_planes = av1_num_planes(cm); |
| int nb_count = 0; |
| // prev_col_mi points into the mi array, starting at the top of the |
| // previous column |
| const int mi_row = xd->mi_row; |
| MB_MODE_INFO **prev_col_mi = xd->mi - 1 - mi_row * xd->mi_stride; |
| const int end_row = AOMMIN(mi_row + xd->height, cm->mi_params.mi_rows); |
| uint8_t mi_step; |
| for (int left_mi_row = mi_row; left_mi_row < end_row && nb_count < nb_max; |
| left_mi_row += mi_step) { |
| MB_MODE_INFO **left_mi = prev_col_mi + left_mi_row * xd->mi_stride; |
| mi_step = |
| AOMMIN(mi_size_high[left_mi[0]->bsize], mi_size_high[BLOCK_64X64]); |
| if (mi_step == 1) { |
| left_mi_row &= ~1; |
| left_mi = prev_col_mi + (left_mi_row + 1) * xd->mi_stride; |
| mi_step = 2; |
| } |
| if (is_neighbor_overlappable(*left_mi)) { |
| ++nb_count; |
| fun(xd, left_mi_row - mi_row, 0, AOMMIN(xd->height, mi_step), 1, *left_mi, |
| fun_ctxt, num_planes); |
| } |
| } |
| } |
| |
| #endif // AOM_AV1_COMMON_OBMC_H_ |